摘要:
It is possible to provide a radio transmission device, a radio reception device, and a radio communication method which can suppress increase of the feedback overhead and improve the throughput characteristic. In ST 304, an UE performs an error judgment for each of CW. In ST 305, a comparison is made on quality between streams in the CW containing the error. ST 306 transmits Nack and quality difference information to a BS. In ST 307, it is reported to the BS that an error has occurred in the CW in the preceding transmission and that one of the streams is a high-quality stream. Moreover, ST 307 selects data which has been transmitted as CW retransmission data in a low-quality stream in the preceding transmission and decides to transmit the selected data from two streams. ST 308 generates a retransmission CW. ST 309 arranges the retransmission CW in the two streams and transmits the retransmission CW to the UE. ST 310 reproduces the CW which has been retransmitted from the BS and performs a symbol synthesis or a bit synthesis so as to reproduce the data which has been transmitted in a low-quality stream in the preceding transmission.
摘要翻译:可以提供能够抑制反馈开销的增加和提高吞吐量特性的无线发送装置,无线接收装置和无线通信方法。 在ST304中,UE对CW中的每一个执行错误判断。 在ST305中,对包含误差的CW中的流之间的质量进行比较。 ST 306向BS发送Nack和质量差异信息。 在ST 307中,向BS报告在前面的传输中CW发生了错误,并且该流中的一个是高质量流。 此外,ST 307选择在先前传输中的低质量流中作为CW重传数据发送的数据,并决定从两个流中发送所选择的数据。 ST308生成重传CW。 ST 309在两个流中排列重传CW,并向UE发送重发CW。 ST 310再现从BS重发的CW,并执行符号合成或比特合成,以再现在先前传输中以低质量流传输的数据。
摘要:
A wireless relay station apparatus for enabling a mobile station and a base station to reliably receive network coding data and to provide sufficient reception performance is provided. (1) A repeater divides data X received from a mobile station into important data and non-important data and divides data Y received from eNB into important data and non-important data. Next, (2) the repeater places the data so that important data Sx for the mobile station and important data Sy for the eNB do not overlap, XORs (exclusive ORs) them, and generates network coding data X (X) Y. (3) The repeater applies downlink propagation inverse characteristic H1−1 to important data portion Px (X) Sy for the mobile station and on the other hand, applies uplink propagation inverse characteristic H0−1 to important data portion Sx (X) Py for the eNB in the network coding data X (X) Y for transmission.
摘要:
Lowering of the frequency use efficiency and throughput is prevented while the blanking advantage is provided at the retransmission time in MCW using a plurality of streams per codeword. In a wireless communication apparatus for using a plurality of streams per codeword and performing data transmission according to a plurality of codewords, when two codewords are transmitted using four streams, for example, from a base station 101 to a user terminal 102, if retransmission occurs in the codeword, the codewords and the streams are arranged so as to decrease the number of streams with the number of codewords intact so that retransmission codeword is transmitted in two streams and new codeword is transmitted in one stream.
摘要:
In the data transmission such as MCW, or the like using multiple streams, errors can be suppressed in feedback information while reducing an amount of information required for feedback every stream. A radio communication apparatus for performing data transmission by multiple code words in multiple streams and blanking transmission at retransmission, includes a Nack detector which detects Nack as a response signal that responds to a received result of code words from a communication partner station; a CQI bit number allocation deciding section which changes an allocation of CQI bit numbers between the multiple streams when Nack is detected; a feedback CQI information generator which generates CQI information of each stream; and a feedback information transmitter which transmits feedback information containing Ack/Nack information, ranking information of each stream, and generated CQI information.
摘要:
To improve throughput by reducing the resource used for transmitting a parameter relating to retransmission control and decreasing the overhead of retransmission control signaling. In a case where a retransmission control method is employed in consideration of adaptive MCS control in which the encoding rate can be changed, the scheduling section sets the MCS in accordance with CQI notified from the communication counterpart apparatus. When transmission data is encoded, the RV parameter bit-number setting section sets the number of bits used for signaling the RV parameter to decrease as the encoding rate of the first transmission is decreased and sets the RV parameter based on the number of bits. For example, in a case where the encoding rate R is R>2/3, two bits are set. In a case where the encoding rate 1/3
摘要:
A wireless communication apparatus wherein the power consumption can be reduced. In this apparatus, a code block dividing part (101) divides a transport block, in which filler bits have been inserted, into a plurality of code blocks. A mapping control part (107) controls, based on both scheduling information, which is received from a scheduler (not shown) and indicative of physical channel resources to be used for code block transmission, and the number of filler bits which is received from the code block dividing part (101), the plurality of code blocks so that they will be mapped to the respective physical channel resources in such an order that a respective code block having a less number of filler bits will be mapped to a respective more forward physical channel resource. A mapping part (108) then maps, based on mapping information received from the mapping control part (107), data symbols, which are received from the modulating parts (106) of the respective ones of code block processing parts (102-1 to 102-C), to the physical channel resources.
摘要:
Provided is a radio communication device which can reduce the affect of CDD channel fluctuation of an interference signal from other cell when using a CDD. In this device, an arrangement unit (105) arranges some of the symbols inputted from a repetition unit (104) in a subcarrier positioned at the top portion of the CDD channel fluctuation of the LD-CDD and arranges the other symbols in a subcarrier at the bottom portion of the CDD channel fluctuation of the LD-CDD. A cyclic delay unit (106-1) and a cyclic delay unit (106-2) supply different cyclic delays to the respective symbols arranged in a plurality of subcarriers among signals inputted from the arrangement unit (105) according to the CDD mode inputted from a transmission parameter control unit (101).
摘要:
Provided is a radio communication mobile station device which can accurately judge a CDD mode of an interference signal from other cell when using a CDD. In this device, a mode judging unit (110) specifies some data signals among data signals inputted from a demodulation unit (106) to be CDD channel estimation signals and measures SINR for each of the CDD channel estimation signals. The mode judging unit (110) judges a CDD mode of the interference signal from other cell according to a difference between average SINR of each pair of the CDD channel estimation signals formed by two CDD channel estimation signals. Moreover, when the mode judging unit (110) has judged that the CDD mode is SD-CDD, the mode judging unit (110) generates CQI corresponding to average SINR of all the CDD channel estimation signals.
摘要:
There are disclosed a multiantenna radio transmitting apparatus and others wherein control information can be transmitted with enhanced reliability while overheads of transport signals being reduced. This apparatus uses a transmission antenna (Tx) (119) to SDM transmit transport data (1) (CW1) and also uses a transmission antenna (120) to SDM transmit transport data (2) (CW2). In this apparatus, when the transmission quality of the transmission antenna (Tx) (119) is better than that of the transmission antenna (Tx) (120), the control information (2) related to the transport data (2) (CW2) is transmitted in a space division multiplex mode via the transmission antenna (Tx) (119), while the control information (1) related to the transport data (1) (CW1) is transmitted in a diversity mode.
摘要:
Provided are a radio communication terminal and a radio communication base station device which are installed in a Multi-User MIMO system even if the ability to suppress interference is low. According to beam combination information fed back from NON-MIMO UE, and beam information and a CQI fed back from another MIMO UE, a scheduler section (102) allocates a space resource to the NON-MIMO UE and allocates the remaining resource to the another MIMO UE. According to the beam combination information, a beam weight generating section (104) generates weight. A transmission beam forming section (105) multiplies each stream outputted from modulation sections (103-1, 103-2) by the weight to form a transmission beam.
摘要翻译:提供即使抑制干扰的能力低的情况下也安装在多用户MIMO系统中的无线通信终端和无线通信基站装置。 根据从NON-MIMO UE反馈的波束组合信息,以及波束信息和从另一个MIMO UE反馈的CQI,调度器部分(102)向NON-MIMO UE分配空间资源,并将剩余资源分配给另一个 MIMO UE。 根据光束组合信息,光束重量产生部分(104)产生重量。 发送波束形成部(105)将从调制部(103-1,103-2)输出的各流乘以权重,形成发送波束。